Make rules for integ and e2e tests

Makefile

@@ -43,6 +43,22 @@ check test:
 	hack/test-go.sh $(WHAT) $(TESTS)
 .PHONY: check test
 
+# Build and run integration tests.
+#
+# Example:
+#   make test_integration
+test_integration test_integ:
+	hack/test-integration.sh
+.PHONY: integration
+
+# Build and run end-to-end tests.
+#
+# Example:
+#   make test_e2e
+test_e2e:
+	hack/e2e-test.sh
+.PHONY: test_e2e
+
 # Remove all build artifacts.
 #
 # Example: